Alert archive / New Jersey / Flash Flood Watches in 2019

Flash Flood Watch 2, NWS Philadelphia/Mount Holly

April 18, 20194 states

NWS Philadelphia/Mount Holly issued this flash flood watch at Apr 18, 2019, 3:17 PM EDT for 4 states. It took effect at Apr 19, 2019, 2:00 PM EDT. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Apr 18, 2019, 3:17 PM EDT (19:17 UTC)
In effect from
Apr 19, 2019, 2:00 PM EDT
Expired
Apr 20, 2019, 9:31 AM EDT
In force
20 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None
All 34 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 19:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.3 hours before the alert went out and 219 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2019-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2019-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
690 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

440 
WGUS61 KPHI 181917
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
317 PM EDT Thu Apr 18 2019

NJZ007-009-PAZ054-055-060>062-070-071-101>106-190330-
/O.NEW.KPHI.FF.A.0002.190419T1800Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren-Hunterdon-Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Washington, Flemington, Jim Thorpe, 
Stroudsburg, Reading, Allentown, Bethlehem, Easton, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
317 PM EDT Thu Apr 18 2019

...FLASH FLOOD WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY MORNING...

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for portions of New Jersey and Pennsylvania, 
  including the following areas, in New Jersey, Hunterdon and 
  Warren. In Pennsylvania, Berks, Carbon, Delaware, Eastern 
  Chester, Eastern Montgomery, Lehigh, Lower Bucks, Monroe, 
  Northampton, Philadelphia, Upper Bucks, Western Chester, and 
  Western Montgomery. 

* From Friday afternoon through Saturday morning

* Showers and thunderstorms, locally heavy, will move across
  eastern Pennsylvania and far western New Jersey Friday
  afternoon. A brief break in precipitation is expected Friday
  evening before a second cluster of showers and thunderstorms 
  moves across the region late Friday night into early Saturday 
  morning. Pockets of one to two inches of rain can be expected 
  with amounts up to three inches. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012-015-190330-
/O.NEW.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Mercer-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, and Trenton
317 PM EDT Thu Apr 18 2019

...FLASH FLOOD WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH
SATURDAY AFTERNOON...

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for portions of central New Jersey and 
  northern New Jersey, including the following areas, in central 
  New Jersey, Mercer. In northern New Jersey, Middlesex, Morris, 
  Somerset, and Sussex. 

* From late Friday night through Saturday afternoon

* Showers and thunderstorms, locally heavy, will move across
  northwest New Jersey late Friday night through midday Saturday.
  Pockets of one to two inches of rain can be expected with 
  amounts up to three inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$
7 follow-up statements
027 
WGUS61 KPHI 190045
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
845 PM EDT Thu Apr 18 2019

NJZ007-009-PAZ054-055-060>062-070-071-101>106-191100-
/O.CON.KPHI.FF.A.0002.190419T1800Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren-Hunterdon-Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Washington, Flemington, Jim Thorpe, 
Stroudsburg, Reading, Allentown, Bethlehem, Easton, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
845 PM EDT Thu Apr 18 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of New Jersey and Pennsylvania, including the 
  following areas, in New Jersey, Hunterdon and Warren. In 
  Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From Friday afternoon through Saturday morning

* Showers and thunderstorms, locally heavy, will move across 
  eastern Pennsylvania and far western New Jersey Friday 
  afternoon. A brief break in precipitation is expected Friday 
  evening before a second cluster of showers and thunderstorms 
  moves across the region late Friday night into early Saturday 
  morning. Pockets of one to two inches of rain can be expected 
  with amounts up to three inches. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012-015-191100-
/O.CON.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Mercer-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, and Trenton
845 PM EDT Thu Apr 18 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT
THROUGH SATURDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey and northern New Jersey, 
  including the following areas, in central New Jersey, Mercer. 
  In northern New Jersey, Middlesex, Morris, Somerset, and 
  Sussex. 

* From late Friday night through Saturday afternoon

* Showers and thunderstorms, locally heavy, will move across 
  northwest New Jersey late Friday night through midday 
  Saturday. Pockets of one to two inches of rain can be expected 
  with amounts up to three inches. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$
556 
WGUS61 KPHI 190749
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
349 AM EDT Fri Apr 19 2019

NJZ007-009-PAZ054-055-060>062-070-071-101>106-191600-
/O.CON.KPHI.FF.A.0002.190419T1800Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren-Hunterdon-Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Washington, Flemington, Jim Thorpe, 
Stroudsburg, Reading, Allentown, Bethlehem, Easton, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
349 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS
AFTERNOON THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of New Jersey and Pennsylvania, including the 
  following areas, in New Jersey, Hunterdon and Warren. In 
  Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From 2 PM EDT this afternoon through Saturday morning.

* Showers and some thunderstorms, locally heavy, will move across
  eastern Pennsylvania and far western New Jersey Friday
  afternoon. A second cluster of showers and some thunderstorms 
  moves across the region late tonight into early Saturday 
  morning. Areas of 1 to 2 inches of rain can be expected with 
  local amounts up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012-015-191600-
/O.CON.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Mercer-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, and Trenton
349 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey and northern New Jersey, 
  including the following areas, in central New Jersey, Mercer. 
  In northern New Jersey, Middlesex, Morris, Somerset, and 
  Sussex. 

* From late tonight through Saturday afternoon.

* Showers and some thunderstorms, locally heavy, will move across
  northwest New Jersey late tonight through Saturday morning.
  Areas of 1 to 2 inches of rain can be expected with local amounts
  up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$
145 
WGUS61 KPHI 191316
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
916 AM EDT Fri Apr 19 2019

DEZ001>004-MDZ008-012-015-019-020-NJZ016>019-021>025-027-192200-
/O.EXA.KPHI.FF.A.0002.190419T1800Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Salem-Gloucester-Camden-
Northwestern Burlington-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, 
Mount Holly, Millville, Hammonton, Cape May Court House, 
Ocean City, Atlantic City, and Wharton State Forest
916 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH SATURDAY MORNING...

The National Weather Service in Mount Holly has expanded the

* Flash Flood Watch to include portions of Delaware, northeast 
  Maryland, and southern New Jersey, including the following 
  areas, in Delaware, Delaware Beaches, Inland Sussex, Kent, and 
  New Castle. In northeast Maryland, Caroline, Cecil, Kent MD, 
  Queen Annes, and Talbot. In southern New Jersey, Atlantic, 
  Atlantic Coastal Cape May, Camden, Cape May, Coastal Atlantic, 
  Cumberland, Gloucester, Northwestern Burlington, Salem, and 
  Southeastern Burlington. 

* From 2 PM EDT this afternoon through Saturday morning

* Showers and some thunderstorms, locally heavy, will move across
  eastern Pennsylvania and, southern New Jersey, the eastern
  shores of Maryland, and Delaware this afternoon. A second 
  cluster of showers and some thunderstorms moves across the 
  region late tonight into early Saturday morning. Areas of 1 to 2
  inches of rain can be expected with local amounts up to 3 
  inches possible.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ013-014-020-026-192200-
/O.EXA.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Monmouth-Eastern Monmouth-Ocean-Coastal Ocean-
Including the cities of Freehold, Sandy Hook, Jackson, 
and Long Beach Island
916 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
AFTERNOON...

The National Weather Service in Mount Holly has expanded the

* Flash Flood Watch to include portions of central New Jersey 
  and southern New Jersey, including the following areas, in 
  central New Jersey, Eastern Monmouth and Western Monmouth. In 
  southern New Jersey, Coastal Ocean and Ocean. 

* From late tonight through Saturday afternoon

* Showers and some thunderstorms, locally heavy, will move across
  northern New Jersey late tonight through Saturday morning. 
  Areas of 1 to 2 inches of rain can be expected with local 
  amounts up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ007-009-PAZ054-055-060>062-070-071-101>106-192200-
/O.CON.KPHI.FF.A.0002.190419T1800Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren-Hunterdon-Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-
Philadelphia-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Washington, Flemington, Jim Thorpe, 
Stroudsburg, Reading, Allentown, Bethlehem, Easton, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
916 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS
AFTERNOON THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of New Jersey and Pennsylvania, including the 
  following areas, in New Jersey, Hunterdon and Warren. In 
  Pennsylvania, Berks, Carbon, Delaware, Eastern Chester, 
  Eastern Montgomery, Lehigh, Lower Bucks, Monroe, Northampton, 
  Philadelphia, Upper Bucks, Western Chester, and Western 
  Montgomery. 

* From 2 PM EDT this afternoon through Saturday morning

* Showers and some thunderstorms, locally heavy, will move across
  eastern Pennsylvania and far western New Jersey this afternoon.
  A second cluster of showers and some thunderstorms moves across
  the region late tonight into early Saturday morning. Areas of 1
  to 2 inches of rain can be expected with local amounts up to 3 
  inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012-015-192200-
/O.CON.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Mercer-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, and Trenton
916 AM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey and northern New Jersey, 
  including the following areas, in central New Jersey, Mercer. 
  In northern New Jersey, Middlesex, Morris, Somerset, and 
  Sussex. 

* From late tonight through Saturday afternoon

* Showers and some thunderstorms, locally heavy, will move 
  across northwest New Jersey late tonight through Saturday 
  morning. Areas of 1 to 2 inches of rain can be expected with 
  local amounts up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

MPS
495 
WGUS61 KPHI 191916
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
316 PM EDT Fri Apr 19 2019

DEZ001>004-MDZ008-012-015-019-020-NJZ007-009-016>019-021>025-027-
PAZ054-055-060>062-070-071-101>106-201000-
/O.CON.KPHI.FF.A.0002.000000T0000Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Warren-Hunterdon-Salem-Gloucester-
Camden-Northwestern Burlington-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Washington, Flemington, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, 
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
316 PM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Delaware Beaches, Inland Sussex, Kent, and New Castle. In 
  northeast Maryland, Caroline, Cecil, Kent MD, Queen Annes, and 
  Talbot. In New Jersey, Atlantic, Atlantic Coastal Cape May, 
  Camden, Cape May, Coastal Atlantic, Cumberland, Gloucester, 
  Hunterdon, Northwestern Burlington, Salem, Southeastern 
  Burlington, and Warren. In Pennsylvania, Berks, Carbon, 
  Delaware, Eastern Chester, Eastern Montgomery, Lehigh, Lower 
  Bucks, Monroe, Northampton, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* Through Saturday morning

* Showers and some thunderstorms, locally heavy, will move across
  eastern Pennsylvania and far western New Jersey early this
  evening. A second cluster of showers and some thunderstorms 
  moves across the region late tonight into early Saturday 
  morning. Areas of 1 to 2 inches of rain can be expected with 
  local amounts up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012>015-020-026-201000-
/O.CON.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Western Monmouth-
Eastern Monmouth-Mercer-Ocean-Coastal Ocean-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, 
and Long Beach Island
316 PM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 AM EDT SATURDAY
THROUGH SATURDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey, northern New Jersey, and 
  southern New Jersey, including the following areas, in central 
  New Jersey, Eastern Monmouth, Mercer, and Western Monmouth. In 
  northern New Jersey, Middlesex, Morris, Somerset, and Sussex. 
  In southern New Jersey, Coastal Ocean and Ocean. 

* From 2 AM EDT Saturday through Saturday afternoon

* Showers and some thunderstorms, locally heavy, will move 
  across northwest New Jersey late tonight through Saturday 
  morning. Areas of 1 to 2 inches of rain can be expected with 
  local amounts up to 3 inches possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

MPS
074 
WGUS61 KPHI 200058
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
858 PM EDT Fri Apr 19 2019

DEZ001>004-MDZ008-012-015-019-020-NJZ007-009-016>019-021>025-027-
PAZ054-055-060>062-070-071-101>106-201200-
/O.CON.KPHI.FF.A.0002.000000T0000Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Warren-Hunterdon-Salem-Gloucester-
Camden-Northwestern Burlington-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Washington, Flemington, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, 
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
858 PM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY 
MORNING...

The Flash Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Delaware Beaches, Inland Sussex, Kent, and New Castle. In 
  northeast Maryland, Caroline, Cecil, Kent MD, Queen Annes, and 
  Talbot. In New Jersey, Atlantic, Atlantic Coastal Cape May, 
  Camden, Cape May, Coastal Atlantic, Cumberland, Gloucester, 
  Hunterdon, Northwestern Burlington, Salem, Southeastern 
  Burlington, and Warren. In Pennsylvania, Berks, Carbon, 
  Delaware, Eastern Chester, Eastern Montgomery, Lehigh, Lower 
  Bucks, Monroe, Northampton, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* Through Saturday morning

* Showers and some thunderstorms, locally heavy, will move across
  the area tonight into Saturday morning. Areas of 1 to 2 inches 
  of rain can be expected with local amounts up to 3 inches 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash 
flooding which can be life-threatening. Heavy rain is expected to 
occur over a short period of time. Rapidly rising flood waters may
quickly inundate roadways and areas of poor drainage. Streams and
creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012>015-020-026-201200-
/O.CON.KPHI.FF.A.0002.190420T0600Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Western Monmouth-
Eastern Monmouth-Mercer-Ocean-Coastal Ocean-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, 
and Long Beach Island
858 PM EDT Fri Apr 19 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 AM EDT SATURDAY 
THROUGH SATURDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey, northern New Jersey, and 
  southern New Jersey, including the following areas, in central 
  New Jersey, Eastern Monmouth, Mercer, and Western Monmouth. In 
  northern New Jersey, Middlesex, Morris, Somerset, and Sussex. In
  southern New Jersey, Coastal Ocean and Ocean. 

* From 2 AM EDT Saturday through Saturday afternoon

* Showers and some thunderstorms, locally heavy, will move across
  the area tonight through Saturday morning. Areas of 1 to 2 
  inches of rain can be expected with local amounts up to 3 inches
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash 
flooding which can be life-threatening. Heavy rain is expected to 
occur over a short period of time. Rapidly rising flood waters may
quickly inundate roadways and areas of poor drainage. Streams and
creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash 
flood warning is issued for your area.

&&

$$
402 
WGUS61 KPHI 200755
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
355 AM EDT Sat Apr 20 2019

DEZ001>004-MDZ008-012-015-019-020-NJZ007-009-016>019-021>025-027-
PAZ054-055-060>062-070-071-101>106-201400-
/O.CON.KPHI.FF.A.0002.000000T0000Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Warren-Hunterdon-Salem-Gloucester-
Camden-Northwestern Burlington-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Washington, Flemington, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, 
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
355 AM EDT Sat Apr 20 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...

The Flash Flood Watch continues for

* Portions of Delaware, northeast Maryland, New Jersey, and 
  Pennsylvania, including the following areas, in Delaware, 
  Delaware Beaches, Inland Sussex, Kent, and New Castle. In 
  northeast Maryland, Caroline, Cecil, Kent MD, Queen Annes, and 
  Talbot. In New Jersey, Atlantic, Atlantic Coastal Cape May, 
  Camden, Cape May, Coastal Atlantic, Cumberland, Gloucester, 
  Hunterdon, Northwestern Burlington, Salem, Southeastern 
  Burlington, and Warren. In Pennsylvania, Berks, Carbon, 
  Delaware, Eastern Chester, Eastern Montgomery, Lehigh, Lower 
  Bucks, Monroe, Northampton, Philadelphia, Upper Bucks, Western 
  Chester, and Western Montgomery. 

* Until 10 AM EDT this morning

* Showers and some thunderstorms, locally heavy, will move across
  the area this morning. Areas of 1 to perhaps 2 inches of rain
  are possible.
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$

NJZ001-008-010-012>015-020-026-201500-
/O.CON.KPHI.FF.A.0002.000000T0000Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Western Monmouth-
Eastern Monmouth-Mercer-Ocean-Coastal Ocean-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, 
and Long Beach Island
355 AM EDT Sat Apr 20 2019

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

The Flash Flood Watch continues for

* Portions of central New Jersey, northern New Jersey, and 
  southern New Jersey, including the following areas, in central 
  New Jersey, Eastern Monmouth, Mercer, and Western Monmouth. In 
  northern New Jersey, Middlesex, Morris, Somerset, and Sussex. 
  In southern New Jersey, Coastal Ocean and Ocean. 

* Until 2 PM EDT this afternoon

* Showers and some thunderstorms with locally heavy rains, will
  move across the area this morning. Areas of 1 to perhaps 2
  inches of rain are possible.
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a flash
flood warning is issued for your area.

&&

$$
147 
WGUS61 KPHI 201331
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
931 AM EDT Sat Apr 20 2019

NJZ001-008-010-012>015-020-026-201445-
/O.CAN.KPHI.FF.A.0002.000000T0000Z-190420T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sussex-Morris-Somerset-Middlesex-Western Monmouth-
Eastern Monmouth-Mercer-Ocean-Coastal Ocean-
Including the cities of Newton, Morristown, Somerville, 
New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, 
and Long Beach Island
931 AM EDT Sat Apr 20 2019

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of central New Jersey,
northern New Jersey, and southern New Jersey has been cancelled.

Heavy rain is coming to an end. There may be some lingering poor 
drainage flooding, but there is no longer a threat for flash 
flooding.

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ007-009-016>019-021>025-027-
PAZ054-055-060>062-070-071-101>106-201445-
/O.CAN.KPHI.FF.A.0002.000000T0000Z-190420T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Warren-Hunterdon-Salem-Gloucester-
Camden-Northwestern Burlington-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Washington, Flemington, Pennsville, Glassboro, Camden, 
Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, 
Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, 
West Chester, Kennett Square, Collegeville, Pottstown, 
Norristown, Lansdale, Chalfont, Perkasie, Morrisville, 
and Doylestown
931 AM EDT Sat Apr 20 2019

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of Delaware, northeast
Maryland, New Jersey, and Pennsylvania has been cancelled.

Heavy rain is coming to an end. There may be some lingering poor 
drainage flooding, but there is no longer a threat for flash 
flooding.

$$

MPS

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 18, 4:15 PM EDTCoastal Flood AdvisoryPHIBucks, Delaware, Philadelphia12 hr

Nearby

Flash Flood Watches in New Jersey, 2019Flash Flood Watches in Pennsylvania, 2019Flash Flood Watches in Maryland, 2019Every flash flood watch in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.